LT3651IUHE-4.1#TRPBF

Battery Chargers Overview

The LT3651IUHE-4.1#TRPBF is a monolithic switching battery charger controller designed for single-cell lithium-ion or lithium-polymer batteries. It integrates a 4A synchronous step-down converter and a linear charge regulator, supporting input voltages up to 32V. The device operates in QFN-36 packages and supports SMD/SMT installation. Key electrical parameters include a 32V maximum operating supply voltage and a 4A charge current capability. The -4.1 suffix indicates specific internal resistor ratios for programming.

Battery Chargers Feature Summary

• Integrates a high-efficiency synchronous buck converter with a linear charge regulator for comprehensive battery management.
• Supports wide input voltage ranges suitable for various power sources including adapters and automotive systems.
• Provides programmable charge termination and thermal regulation to ensure safe charging profiles.

Battery Chargers Applications

• Single-cell lithium-ion battery charging in portable electronics
• Lithium-polymer battery management in industrial devices
• Power supply design for handheld instruments

Battery Chargers Procurement Notes

Verify the exact suffix against official Analog Devices documentation to confirm pinout and internal resistor configurations. Ensure the QFN-36 package compatibility with your PCB footprint. Confirm RoHS compliance status through the manufacturer's latest environmental declaration before finalizing procurement specifications.

Battery Chargers Selection Notes

Select this component when designing chargers for single-cell Li-Ion or Li-Po batteries requiring integrated buck conversion. Consider the 32V input range and 4A current capacity relative to system requirements. Verify that the QFN-36 package size fits within the available board space constraints.

Battery Chargers Part Context

This part belongs to the LT3651 family of battery chargers from Analog Devices. It is distinct from other LT3651 variants by its specific internal resistor network configuration indicated by the -4.1 suffix. The family focuses on compact, high-efficiency solutions for single-cell applications.

Battery Chargers Replacement Considerations

Consult Analog Devices datasheets for direct pin-to-pin replacements within the LT3651 series. Verify functional equivalence regarding the -4.1 specific resistor ratios before substituting with other suffixes or competing parts.

Battery Chargers FAQ

What does the -4.1 suffix indicate?

The -4.1 suffix specifies the internal resistor ratio configuration used for setting specific charge parameters, such as termination voltage or current limits, as defined in the official datasheet.

Is this part a standalone charger IC?

No, it is a controller that integrates the switching FETs and linear regulator but requires external components like inductors and capacitors for operation.